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wait for udev settle before restarting networkd #936

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Merged
sknat merged 1 commit into from
Mar 2, 2026
Merged

wait for udev settle before restarting networkd #936

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5 changes: 5 additions & 0 deletions config/default_hook.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,11 @@ restart_network () {
if systemctl status systemd-networkd > /dev/null 2>&1; then
echo "default_hook: system is using systemd-networkd; restarting..."
systemctl restart systemd-udev-trigger
# Wait until udev finishes processing net events so systemd-networkd
# computes DHCPv6 IAID from the restored ID_NET_NAME_* properties.
if ! udevadm settle --timeout=5; then
echo "default_hook: ERROR: udevadm settle timed out"
fi
systemctl restart systemd-networkd
elif systemctl status NetworkManager > /dev/null 2>&1; then
echo "default_hook: system is using NetworkManager; restarting..."
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8 changes: 8 additions & 0 deletions vpp-manager/hooks/network_manager_hook.go
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Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,14 @@ func (h *NetworkManagerHook) restartSystemdNetworkd() error {
if err != nil {
h.log.Warnf("NetworkManagerHook: Failed to restart systemd-udev-trigger before systemd-networkd: %v", err)
}

// Wait for udev to finish processing net events so systemd-networkd
// can compute DHCPv6 IAID from restored ID_NET_NAME_* properties.
cmd := h.chrootCommand("udevadm", "settle", "--timeout=5")
if err := cmd.Run(); err != nil {
h.log.Errorf("NetworkManagerHook: ERROR: udevadm settle timed out: %v", err)
}

return h.restartService("systemd-networkd")
}

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